Electric water-heater.



No. 897,186. PATENTED AUG. 25, 1908. J. R. AYOTTE.

ELECTRIC WATER HEATER.

APPLIOATION FILED 00122, 1907.

l I i I mum mm Witnesses f wtor,

'rn: NORRIS psrsns co., wnsnmcrau, o. c

UNITED STATES PATENT OFFICE.

JOSEPH RENE AYOTTE, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO JEANBAPTISTE ALBERT MARTIN, OF MONTREAL, CANADA.

ELECTRIC WATER-HEATER.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed. October 2, 1907. Serial No. 395,527.

To all whom it may concern:

Be it known that I, JosEPH RENE AYo'r'rE, a subject of the King of GreatBritain, residing at the city and district of Montreal, in the Provinceof Quebec, Canada, have invented certain new and useful Improvements inElectric Water-Heaters and 1 do hereby declare that the following is afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The present invention relates to electric water heaters of the generaltype of heaters disclosed in a prior copending a plication of my own,Serial No. 390,081, an is designed as an improvement on the heatertherein shown. v

One of the main objects of the present invention is to provide a heatingelement so constructed and arranged as to raise the temperature of thewater to the desired degree in the shortest possible time.

The resent improvement is also constructs with the idea of facilitatingthe easy and rapid assembling and separation of the several parts and toprovide perfect insulation of the parts from the current of the heatingelements.

In order to enable any one skilled in the art to which this inventionapplies to more readily understand its construction, operation and theuse of the same, reference should be had to the accompanying drawingsforming part of the resent application in which drawings simi arreference characters designate like parts throughout the several views.

In the drawings :-Figure 1 is a lan view with the front of the heaterpart y broken away to show the arrangement of the heating elements; and,Fig. 2 is a side elevation with the casing partly broken away.

Referring to the drawings in detail, a water receptacle comprising atubular body 1 and removable end caps 2 is supported on or adjacent arheostat of any well known form. One or both of these brackets isprovided with adjusting screws 3 adapted to take against the outersurface of the cap 2 and to force it tightly against the end of the tube1 to make a perfectly water tight oint.

The interior of the caps and the interior of the tubular body are bothcovered with an insulating material. rial is both a non-conductor ofheat and of Preferably this mateelectricity in orderto retain all theheat within the tubular body and to prevent the tubular body becomingcharged from the heating current. The heating elements in the presentinstance comprise carbon rods 4 and 5, German silver wire in coil form 6and a carbon rod 7. The ends of rod 4 are mounted in fluid tight micainsulating boxes or supports 8 in such manner as to leave a spark gapbetween its lower end and the end of the conductor 9 and a similar gapbetween its upper end and the lower end of carbon rod 5, which is alsosupported in a similar manner. The upper ends of carbon rod 5 and theGerman silver wire 6 are similarly supported, as also are the lower endof the German silver wire and the upper end. of the carbon rod 7. Thelower end of the carbon rod 7 is supported in the same manner as that ofrod 4. The inner faces of the caps 2 are packed with asbestos fiber orsimilar insulating material, as indicated at 9 and a sheet of likematerial is attached to or laid securely over the entire inner face oftube 1.

In order to prevent short circuiting a partition of insulating material10 runs longitudinally 0f the tube 1 between the heating elements and,of course, extends the entire Width of the tube.

In order to make a perfectly tight joint between the ends of the tube 1and the inner faces of the caps 3, rubber washers or similar packing maybe used.

A suitable inlet and outlet for the water are provided in any well knownand usual way.

The operation of the device is as follows Water is admitted to thetubular body 1 and the switch of the rheostat is moved to send a currentthrough the conductor 9, through the ordinary resistance or heatingelements and out through the conductor 9 at the opposite side. As thecurrent jumps from the conductor 9 to carbon 4 and similarly from eachsucceeding heating element to the neXt succeeding one, the parts of theelements receiving and emitting the sparks aresubjected to a hightension and consequently raised to a very high degree of heat, as iswell known. The German silver wire, being of high resistance, becomeshighly heated throughout its entire extent. The electric current heatingthe elements, as it temperature of the water in the tubular body 1 tothe desired point in the shortest possible time.

The heating elements disclosed in the present application arecomparatively cheap commercial articles and are such as may be readilyraised to a very high degree of temperature by a comparatively weakcurrent of electricity.

Many changes may be made in the construction, and arrangement of theminor parts of the invention without in any way departing from the fieldand scope of the present invention and it is meant to include all such.in this application wherein only one prelerred form is illustrated.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. An electric water heater comprising a casing, a plurality ol heatingelements within said casing adapted to be connected to electricconductors, and spaced apart to present sparking gaps between thesuccessive elements whereby those parts of the elements adjacent thesparking gaps are raised to a high temperature to heat the water andfluid tight mica boxes inclosing said spark. gaps and supporting theadjacent ends of said elements.

2. An electric water heater comprising a casing, a plurality of heatingelements within said casing adapted to be connected to electricconductors and spaced apart to present sparking gaps between thesuccessive elements, said elements including a German silver wireadapted to be heated to a high degree by the electric current to heatthe water in the casing and fluid tight mica boxes inclosing said sparkgaps and supporting the adjacent ends of said elements.

3. An electric water heater comprising a casing, a plurality of heatingelements within said casing and adapted to be connected to electricconductors, and an insulating partition extending longitudinally of thecasing and separating said heating elements.

In witness whereof I have hereunto set my hand in the presence ot' twowitnesses.

JOSEPH RENE AYOTTE.

Witnesses ERNEST BELANPE, T. MYNA'RD.

